Observe figures carefully and answer the following questions.

(a) Which process is being tested in the activity?
(b) What is the result of the activity? Give reasons.

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Solution

(a) The given activity is used to demonstrate the presence of carbon dioxide in exhaled air.

(b) We observe a significant change in test tube ‘B’, where lime water turns milky. While there is no change in test tube ‘A’.
This is because, carbon dioxide reacts with lime water, giving a milky white appearance.

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Observe figures carefully and answer the following questions. ​ (a) Which process is being tested in the activity?​ (b) What is the result of the activity? Give reasons.​

Observe figures carefully and answer the following questions.

(a) Which process is being tested in the activity?
(b) What is the result of the activity? Give reasons.